GeezerVison

Error, the base class of Fault, ProtocolError and ResponseError, and ResponseError itself both exist at runtime but had no entries on the page, so references to them did not resolve. This adds a new "Error Objects" section just before "Fault Objects" with exception entries for both.

Server is only an old alias of ServerProxy, so it stays a sentence in the ServerProxy description and its link is suppressed with !. Transport and SafeTransport are different: the same description calls them internal, and the XXX note at the top of the file already lists Transport among the things that are not documented yet. Documenting them properly is a larger change than a reference fix, so those two links are suppressed too. The introspection paragraph linked :attr:`~ServerProxy.system` , which has no entry of its own; the methods under it are documented as ServerProxy.system.listMethods() and so on, so that link is suppressed as well.

A clean nit-picky build shows no warnings left for the file, and Doc/tools/check-warnings.py --fail-if-regression --fail-if-improved --fail-if-new-news-nit passes with the entry removed from .nitignore.

I had help from an LLM to find the warnings and draft the change and this description. I reviewed the diff and the build results before opening.

• Issue: Fix all Sphinx reference warnings in Doc/library/{xml*,pyexpat}.rst #151943